A rare arrival of the exquisite tremolo "MODERATO" that blends in with your amplifier! Tremolo has a long history as a guitar effect, having been built into amplifiers since the 1950s, but MODERATO's warm and truly musical tremolo blends seamlessly into the amplifier. It's possible to switch between two types of waveforms, and in M mode it beautifully reproduces bias tremolo-like behavior, where the oscillation changes depending on the magnitude of the input signal! The way the oscillation gradually becomes stronger and more stable from the beginning of the sound to the sustain is so realistic that it gives the illusion of sounding like a traditional American amp! The sine wave mode has a constant oscillation, producing an effective optical tremolo-like sound like a blackface. Many guitarists have been troubled by the volume change caused by bypass sounds, which is common with tremolo effects. However, the MODERATO is equipped with an output volume that can adjust the volume in both attenuation and amplification directions. The vintage feel is deliberately set in the attenuation direction, but it also allows for practical sound creation that maintains sound clarity. The DEEP knob allows you to adjust the amount of pressure exerted by the wet tremolo sound; at minimum, it sounds like it is coming from deep within the original sound, and at maximum, it produces a sound image that is equivalent to the original sound. This really shows the unique flavor of HUMAN GEAR, where even though the changes are subtle, you can find the sound you like as you play! A very rare HUMAN GEAR tremolo! Please enjoy! We have created a tremolo that rivals the tremolo sounds of the GIBSON GA8T and MAGNATONE 280. When you plug it into MODERATO, the sound will blend in naturally, thickly, and into a high-quality ensemble without getting lost. The smoother curves require a thicker tremolo, and in many cases it just sounds like a tremolo, and doesn't really add much to the song. The MODERATO has a volume control. Its purpose is to compensate for the loss of volume experienced when the tremolo is turned on. This volume is linked to the depth, so you can find the best point by adjusting these two controls. DEEP is used to add thickness to the tremolo sound. The LO/HI switch allows you to vary the rate speed greatly, and you can also choose from two waveforms.